Concept:The required word means “done on purpose,” which is the direct opposite of acting accidentally or without conscious control.
Explanation:The word “deliberately” means “intentionally” or “in a planned, conscious way.”
This clearly opposes an unintentional, instinctive, or accidental action.
“Thoughtfully” means “in a careful or considerate manner,” not an antonym.
“Intuitively” means “instinctively,” which matches the idea of acting without deliberate thought, not opposes it.
“Annoyingly” simply means “in an irritating way,” and has no relation to intent.
Thus, only option C gives the correct opposite meaning in the gap.
Answer:C. deliberately